Yarn-drying apparatus.



Patented July 22, um.

' No. 705,i58.

a. s'roma. YARN DRYING APPARATUS.

(Application filed Aug. 15, 1901.)

7 Sheets-Sheet (NG MBdBI.)

i lrJvEN'rm s PETERS co, PNOTO-LITHO w smnm'ou, n, c,

No. 7 05,l58. Patented July 22, I902.

G. STONE. YARN DRYING APPARATUS.

(Application filed Aug. 15, 1901.)

7 Sheets-Sheet 2..

(No Model.)

a; L m w THE NORRIS PETERS co v PHOYO-LITMOAVASHmc-TON, o. L

No. 705,|53. Patehted July 22, I902.

G. STONE.

YARN DRYING APPARATUS. (Application filed Aug. 15, 1901.) (No Model.) 7 sheets shegt 3.

WITNESSES! @QM MM??? v THE Nmmxs PETERS c0 PHOTO LITNO. WASHKNGYON, a. c,

, Patented July 22, I902. GI STONE.

YARN DRYING APPARATUS.

(Application filed Aug. !5, 1901.)

7 Sheets-Sheet 4.

(No Model.)

'NV'ENTEIRI m1.

Tm.- NORRIS Pzr No. 705,|58. Patented 1uiy'22'f1902.

, a. STONE.

YARN DRYING APPARATUS.

(Appli pation filed Aug. 15, 1901.) (No Model.) 7-Sheets-Sheet 5. o h

m: Norms vzrzns co. woTo-umo.v msnmuvan, a. c.

No. 705,l58. Pateh tedluly 22', I902.

' G. STONE.

YARN DRYING APPARATUS.

(Application filed Aug. 15, 1901.) v

(No man.) 7 Sheets-Sheet s.

UNITED STATES PATENT OEEIo-E.

GEORGE STONE, OF NORTH ANDOVER, MASSACHUSETTS, ASSIGNOR TO M. T. STEVENS AND SONS, OF NORTH ANDOVER, MASSACHUSETTS.

YARN-DRYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 705,158, dated July 22, 19012.

' Applicationfile didugust15,1901. s al No. 72,149. (Nomodelo To all whom it. may concern: pressuresupplied to the machine from a suit- Beit known that I, GEORGE STONE, ofNorth able heater and for controlling the hot air, Andover, in the county of Essex and State so that it is uniformly distributed and acts of Massachusetts, have invented certain new evenly on all parts of the yarn. I also pro- 5; 5 and useful Improvements in Yarn-Drying vide means for shutting oif the heat from the Apparatus, of which the following is a speciyarn whenever the movement of the latter is fication. arrested and for admitting the heat to the This invention relates to apparatus fordryyarn whenever the movement is resumed. ing yarn which has been treated with a sizing In the drawings, a represents the casing or 60 to or dressing composition; and it has for its frame of the machine,.which is providedwith object to provideimproved means for drying rolls 1), journaled in hearings on the frame. the sized yarn and for controlling the heat- Said rolls are provided for the support and ing medium in such manner as to prevent passage of the yarn 0 through the machine. liability of overexposure of the yarn to the The yarn is taken from any suitable supply 65 heating medium and the consequent discoland is usually unwound from a reel or spool oration of the same. (not shown) and passed between two rolls d Theinvention consists in theimprovemeni's e, located at one end of the upper portion of which I will now proceed to describe and the casing. The roll 6 is partiallyimmersed claim. in a tank or troughf, which contains a suit- 70 Of the accompanying drawings, forming a able sizing mixture c, which is imparted to part of this specification, Figure 1 represents the yarn by the roll 6, and the surplus is a side elevation of my improved yarn-drying pressed out of the yarn by the roll d, which apparatus, parts being shown in section. is arranged to bear upon the roll e. (See Fig. 2 represents an elevation of the opposite Fig. 5.) r 75' side of the apparatus from that shown in Fig. The yarn passes from the rolls (Z and 6 over 1. Fig. 3 represents a section on line 3 3 of the rolls b back and forth in a sinuous down- Fig. 1 looking downwardly. Fig. 4 repreward course through the casing a, and it is exsent-s an end View of the apparatus. Fig. 5 posed to a current of heated air which is suprepresents a longitudinal section on the line plied to the casing a by any suitable means, 80 3o 5 5 of Fig. 4. Fig. 6 represents a horizontal preferably by a blower passing the'outer air section on line 6 6 of Fig. 5 looking from the over coils of steam-pipes and through a blast right. Fig. 7 represents a sectionalized plan. pipe or conduit 1) into the lower portion of the on the line 7 7 of Fig. 5. casing. The casing is provided with horizon- The same letters of reference indicate the tal partitionsj, having perforations 7a, which 85 5 same parts in all the figures. are preferably narrow elongated slots, as

It has heretofore been the practice in ma. shown in Fig. 7. The heated air passes chines of this class to pass the yarn through through. the said perforations, and is thus I the sizing-rolls and then over pipes filled evenly distributed and caused to pass uniwith steam to dry the sizing upon the yarn. formly through the horizontal stretches of the 0 The frequent breaking of the yarn as it passes yarn and in a direction substantially at right through the machine necessitates stopping of angles to said stretches. the driving machine in order to join or Zrepresents anexhaust pipe or conduit havpiece the broken strand. The stopping .ing a widened receiving end Z, which enters of the machine exposes the yarn to the heat the upper portion of the casing abovethe up- 9 5 of the steam-pipes for a protracted period, so per horizontal stretch of yarn. Said exhaustthat the yarn becomes 'overdried in sections, pipe is adapted to withdraw the heated and for the reason that the heat from the steammoisture-laden air from the upper portion of pipes cannot be controlled in the brief stops the casing and maintain aproper upward curthat are made. rent of the heated air through the stretches :00 In carrying out my invention I provide of yarn. The exhaust-pipe l is connected means for drying the yarn by hot air under with a main pipe 111., which may be connected with the exhaust-pipes l of a plurality of driers and is connected with an exhaust-fan or other suitable apparatus (not shown) to create a sufficient vacuum in the pipes m and Z to draw the heated air from the casin g a. The exhaust apparatus prevents the escape ofthe heated air through the various openings adjacent to the yarn-guiding rolls and cooperates with the perforated partitions j in controlling the supply of heated air and confin ing it to the area containing the horizontal stretches of yarn.

After the yarn has been dried it passes out of the lower portion of the casing over rolls or n and a vibrator 0 through a reed 10 to a suitable winding apparatus. (Notshown.) It will be observed that the freshly-sized yarn enters the upper portion of the casing and progresses in a downward direction through the casing, emergingin a dried condition from the lower portion. The yarn is therefore effectively dried, because the moisture is continuously carried upwardly from the supply of dry air, each stretch of yarn from the top downwardly being subjected to drier air than the stretch above it, the final stretch being subjected to dry air that has not been affected by the moisture evaporated from the yarn.

The means for simultaneously stopping and starting the circulation of hot air and the movement of the yarn will now be described.

The roll 6 is provided upon one end with a sprocket-wheel g, which is provided with a chain 7', which engages a sprocket-wheel 8 upon ashaft t, journaled in bearings on standards a, formed on the frame of the machine. The roll 71. is also driven from the shaft of roll e by a belt 0;, engaging a pulley upon said shaft and roll, as shown in Fig. 2. The rolls 1) are idle and are rotated by the contact of the yarn therewith, as is the usual practice in this class of machines.

The shaft 15 has a pulley to, which pulley is connected by a belt with a pulley a, mounted upon a shaft I). Said shaft has a pulley c, which is connected by a belt (1 with a pulley on the main shaft. (Not shown.) The belt d is adapted to drive either the pulley c, which is tightly secured to the shaft b, or it may engage the pulley e, which is loosely arranged upon the shaft by the following means: By reference to Figs. 4 and 6 it will be seen that the pipes t' andl are provided with dampers f f, adapted to move in suitable guides g g. Said dampers are of sufficient area to close the pipes and prevent the passage of air therethrough. 'lo'the outer end of each of the dampers f is connected a f and at the other end to one end of a shipper-lever Z. Said lever is pivoted at m to a hanger n, suitably secured to the supports.

of the upper flooring. The other end of the rolls .9, the arrangement being such that the operator may have convenient access to said rope at various points when he desires to operate the dampers and the belt-shipper. It will be seen that the belt-shipper is operated by the movement of the upper damper, and when the dampers are open to admit the heated air to the yarn the latter will be in motion, because the act of opening said dampers causes the driving-belt to be thrown upon the tight pulley and starts the machine, and when it is necessary to stop the machine the action of the shipper throws the driving-belt upon the loose pulley, causing the machine to stop and. at the same time closing the dampers, so that the heated air is kept from the yarn. i

The following useful results are obtained by my invention: In warm weather air may be supplied to the casing at its natural temperature without being artificially heated, the circulation and efiective distribution of the air being insured by the conjoint action of the blast, the exhaust, and the intermediate air-distributing perforated partitions. The air withdrawn from the casing by the exhaust may be utilized for ventilating the portion of the mill or factory in which the apparatus is located and for heating the same when the air-supply is artificially heated. The effective distribution and circulation of the air enables the yarn to be dried at a relatively low temperature of from 150 to 160 Fahrenheit, thus economizing heat and preventing liability of discoloration of the yarn by excessive heat. The described shut.- ting off and turning on of the air-supply when the yarn is stopped and started not only prevents overexposure and discoloration of the yarn when its motion is discontinued, but

also economizes heat. I am enabled to use one heater, one blower, and one exhaust-fan for a number of machines, so that the cost of the heating and air-circulating apparatus is less than would be the case if a separate heater were required for each machine or drier.

My invention is not limited to the details of mechanism here shown, and. the same may be variously modified without departing from the spirit of the invention.

Having thus,exp1ained the nature ofthe invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which itmay be made or all of the modes of its use, I declare that What I claim is 1. A yarn-drying apparatus comprising a casing, rolls located at opposite ends of the casing and arranged. to conduct yarn therethrough in a sinuous course and in a series of stretches, means for forcing air under pressure into the casing at one side of the series of stretches, means for exhausting air from the casing at the opposite side of the series of stretches, and intermediate means between the stretches for distributing the air in its passage through the casing.

2. A yarn-drying apparatus comprising a casing, rolls located at opposite ends of the casing and arranged to conduct yarn therethrough in a sinuous course and in a series of stretches, means for forcing air under pressure into the casing at one side of the series of stretches, means for exhausting air from the casing at the opposite side of the series of stretches, and fixed perforated partitions located in the casing substantially parallel with and between the said stretches, whereby the air is distributed.

3. A yarn-drying apparatus comprising a casing, rolls located at opposite ends of the casing and arranged to conduct yarn in a sinuous course and in a series of stretches through the casing, perforated partitions located in the casing and extending substantially parallel with and between stretches of yarn therein, means for forcing air under pressure into the casing at one side of the series of stretches, and means for exhausting air from the casing at the opposite side of the series of stretches.

4. A yarn-drying apparatus comprising a casing, means for conducting yarn therethrough in a sinuous course and in a series of substantially parallel stretches, means for applying sizing to the yarn at or near the locality Where it enters the casing, a blast-conduit arranged to deliver air under pressure to the casing at one side of the series of stretches, the air delivered by said conduit impinging first against the stretches which are farthest from the locality where the sizing is applied, and an exhaust-conduit arranged to draw air from the casing at the opposite side of the series of stretches, the receiving end of the exhaust-conduit being adjacent to the freshlysized stretches.

5. A yarn-drying apparatus comprising a casing, means for conducting yarn therethrough in a sinuous course and in a series of stretches, a conduit for delivering air under pressure to said casing, and means for stopping and starting the movement of the yarn through the casing and for closing and opening said conduit simultaneously with the stopping and starting of the yarn, substantially as described.

6. A yarn-drying apparatus comprising a casing, means for conducting yarn therethrough in a sinuous course and in a series of stretches, a conduit for delivering air under pressure to said casing, an exhaust-conduit for removing air from the casing, and means for stopping and starting the movement of the yarn through the casing and for closing and opening said conduits simultaneously with the stopping and starting of the yarn, substantially as described.

7. A yarn-drying apparatus comprising a casing, means for conducting yarn therethrough in a sinuous course, an air-supply or blast conduit arranged to deliver air to the casing, a valve or damper in said conduit, yarn-impelling mechanism including a driving-shaft having a fast pulley and a loose pulley and a belt adapted to run on either of said pulleys, a shipper for said belt, and connections between said shipper and damper whereby the damper and shipper may be simultaneously operated.

S. A yar11-drying apparatus comprising a casing, means for conducting yarn in asinuone course therethrough, an air-supply or blast conduit and an exhaust-conduit each communicating with the casing and each having a valve or damper, yarn-impelling mechanism including a driving-shaft having a fast pulley and a loose pulley, and a belt adapted to run on either pulley, a shipper for said belt and connections between said shipper and the dampers of said conduits whereby said dampers and shipper are simultaneously operated.

9. A yarn-drying apparatus comprising a casing, means for conducting yarn therethrough in a sinuous course, yarn-impelling mechanism including a driving-sl1aft having. a fast pulley and a loose pulley and a belt adapted to run on either of said pulleys, a shipper for said belt, an air-supply or blast conduit arranged to deliver air to the casing,

a valve or damper in said conduit, and a damper and shipper operating mechanism. including an elongated flexible cord accessible at different points, and connections between said cord and the damper and shipper.

In testimony whereof Ihave aflixed my signature in presence of two witnesses.

GEORGE STONE.

Witnesses:

NEWTON P. FRYE, KATE O. 

